Company lists · Data refreshed September 2026

Top 25 Digital advertising platform companies based in Chicago, United States

Name: Digital advertising platform companies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 197 companies tracked

RevenueBase identified 197 digital advertising platform companies headquartered in Chicago, United States as of September 2026 and tracks 3,401 professional contacts across them, including 1,296 with verified work emails. Across the United States, New York is the largest hub for this category (862 companies); Chicago has 197.

This list covers digital advertising platform companies headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

197Companies

3,401Contacts tracked

1,296Verified emails

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The 25 largest digital advertising platform companies based in Chicago, United States

Ranked by team size

Top 25 of 197 digital advertising platform companies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to digital advertising platform companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	BASIS	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	501-1,000	891 contacts →
	Partial evidence “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Source: RevenueBase Database · checked Sep 29, 2026
2	Affinity Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	201-500	446 contacts →
	Indirect evidence “Affinity is a leading global AdTech company, empowering publishers to maximize revenue and enabling advertisers to reach their ideal audiences.” Source: RevenueBase Database · checked Sep 29, 2026
3	Strike Social	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	161 contacts →
	Partial evidence “Strike Social’s machine learning technology is an end-to-end YouTube, Meta, TikTok, and all-biddable social execution platform built to generate savings for agencies and deliver…” Source: RevenueBase Database · checked Sep 29, 2026
4	Galactic FED Digital Marketing Agency	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	137 contacts →
	Partial evidence “Galactic Fed is a full-service digital marketing agency focused on one thing: HELPING BUSINESSES GROW THEIR REVENUE.” Source: RevenueBase Database · checked Sep 29, 2026
5	Digital Authority Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	95 contacts →
	Partial evidence “Digital Authority Partners (DAP) is an integrated digital agency that blends data-driven insights and innovative problem solving to help companies evolve, compete and grow in a…” Source: RevenueBase Database · checked Sep 29, 2026
6	DOE Media	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	85 contacts →
	Strong evidence “DOE Media is a leading independently owned and operated data-driven direct response advertising platform providing sophisticated solutions to partners ranging from startups to…” Source: RevenueBase Database · checked Sep 29, 2026
7	Envisionit	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	69 contacts →
	Partial evidence “Envisionit is an award-winning, full-service digital marketing agency headquartered in Chicago with in-house Media, Creative, Tech, Strategy and Analytics teams.” Source: RevenueBase Database · checked Sep 29, 2026
8	Eicoff	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	65 contacts →
	Indirect evidence “Transform your marketing into a growth engine.” Source: RevenueBase Database · checked Sep 29, 2026
9	Logical Media Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	45 contacts →
	Partial evidence “Logical Media Group is a full-service digital marketing agency located in the River North neighborhood of Chicago.” Source: RevenueBase Database · checked Sep 29, 2026
10	RAI Media INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	35 contacts →
	Partial evidence “Radio Advertising was established in 1963 specializing in broadcast advertising for small to mid-size businesses.” Source: RevenueBase Database · checked Sep 29, 2026
11	Adtitude Digital	Partial evidence	Chicago, United StatesHQ checked Sep 29, 2026	1-10	26 contacts →
	Partial evidence “A Technology, Data and Digital Marketing Services Provider.” Source: RevenueBase Database · checked Sep 29, 2026
12	I-Prowess	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	24 contacts →
	Partial evidence “Since 2016, we’ve been your trusted partner in cutting-edge digital marketing and performance-driven success.” Source: RevenueBase Database · checked Sep 29, 2026
13	SEO Design Chicago	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Strong evidence “SEO Design Chicago works with companies looking to increase their brand presence and grow their business through online digital advertising.” Source: RevenueBase Database · checked Sep 29, 2026
14	Perfect Search Media	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “Perfect Search Media is a top-rated, Chicago-based digital marketing agency.” Source: RevenueBase Database · checked Sep 29, 2026
15	Fortress	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	18 contacts →
	Strong evidence “Fortress Consulting combines the creative strengths of a full service advertising agency with the technical skills of a cutting edge digital media firm.” Source: RevenueBase Database · checked Sep 29, 2026
16	Accuen	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	18 contacts →
	Partial evidence “Accuen is Omnicom Media Group’s programmatic agency, operating the industry’s first open and flexible platform for programmatic media buying for the world's leading marketers.” Source: RevenueBase Database · checked Sep 29, 2026
17	Next Click Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “We are an advertising technology company based in Chicago.” Source: RevenueBase Database · checked Sep 29, 2026
18	Ds&p Digital Marketing & PR Agency	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “DS & P is an digital marketing agency offering SEO, PPC, Social Media Management, Crowd-Funding, Website Development and Branding Solutions.” Source: RevenueBase Database · checked Sep 29, 2026
19	Matchnode	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	16 contacts →
	Partial evidence “Matchnode is an ROI-focused internet marketing company that serves its clients in the areas of digital strategy, traffic generation, and conversion optimization.” Source: RevenueBase Database · checked Sep 29, 2026
20	Xamtac Consulting	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	15 contacts →
	Strong evidence “Digital Marketing Agency that takes a scientific approach to -Digital Marketing -Paid Ad Platforms -Marketing Creatives -Landing Pages -Email/SMS Campaigns & Automated Flows…” Source: RevenueBase Database · checked Sep 29, 2026
21	Onimod Global	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “WE ARE YOUR DIGITAL MARKETING & DEVELOPMENT TEAM.” Source: RevenueBase Database · checked Sep 29, 2026
22	Hippo Media	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	12 contacts →
	Strong evidence “Hippo Media is a digital media company specializing in video production, content creation, and targeted advertising.” Source: RevenueBase Database · checked Sep 29, 2026
23	EPL Digital	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	11 contacts →
	Partial evidence “Since 2012, we’ve been an integral partner in our clients' customer acquisition efforts by generating maximum value and trackable ROI from their digital marketing investments.” Source: RevenueBase Database · checked Sep 29, 2026
24	Simplified Solutions Digital Marketing Agency	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “Simplified Solutions is a Digital Marketing and Technology company located in Chicago, Illinois.” Source: RevenueBase Database · checked Sep 29, 2026
25	MBUY	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “MBuy is the leading everychannel media partner.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: digital advertising platform companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names digital advertising platform companies.
Partial evidence: Its own public description names part of digital advertising platform companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name digital advertising platform companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 197 digital advertising platform companies based in Chicago, United States

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Digital advertising platform companies based in Chicago, United States at a glance

As of Sep 29, 2026

38.1%Verified-email coverage

17.3Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

127

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 197 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among digital advertising platform companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “digital advertising platform companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names digital advertising platform companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among digital advertising platform companies, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,296 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Digital advertising platform companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names digital advertising platform companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many digital advertising platform companies are there based in Chicago, United States?

RevenueBase identified 197 digital advertising platform companies headquartered in Chicago, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

BASIS, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most digital advertising platform companies?

New York leads the United States with 862 headquartered companies, followed by Los Angeles (372) and Miami (340). Chicago has 197.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,296 verified decision-maker contacts tracked across these 197 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.